Publication
Reference
Tafi A., Procacci P., Castellucci E., Salvi P.~R. (1991). Polar phonons in SO$_2$ single crystal. Chem. Phys., 151, 205 - 217.
Names
  • A. Tafi
  • P. Procacci
  • E. Castellucci
  • P.~R. Salvi
Article and keywords
Title
Polar phonons in SO$_2$ single crystal
Abstract
The Raman spectrum of a single SO$_2$ crystal in various polarization geometries has been measured at 20 K and discussed in terms of LO and TO components of polar crystal modes. Lattice phonons have been assigned on the basis of their behaviour with polarization. Lattice dynamical calculations on both the internal and lattice phonons are in good agreement with experimental data. Using gas-phase transition dipole moments and a dipole\textemdashdipole intermolecular potential the angular dispersion of fundamental vibrons has been calculated. For lattice phonons, a combination of atom-atom and electrostatic potential reproduces not only the phonon frequencies but, for polar phonons, also their LO-TO splitting.
Keywords
spectroscopy, transmission spectra, Raman spectra, band position, band vibration mode, mid-IR, molecular solid, SO2
Content
spectral data, band list data, experimental physics
Year
1991
Journal
Chemical Physics
Volume
151
Number
2
Pages
205 - 217
Document type
article
Publication state
published
Doi
10.1016/0301-0104(91)80102-N
Identifiers